The Trestles is a warm weather bag that is roomy and comfortable. Roominess is good and bad; it makes this one of the most comfortable bags, but also one of the least warm since there is extra air-space that the body needs to work to heat up. It is one of the heaviest bags we tested, and therefore not very versatile. That being said, at $99, this bag is a pretty excellent value for what you get.
Marmot Trestles 30 - Women's Review
Cons: Heavy, bulky, not very warm
Our Analysis and Test Results
This is a good value, warm weather synthetic bag. It is comfortable and has lots of features. The most recent version of this model has received a color change, but no technical changes since we last tested the Trestles.
The Trestles 30 is meant for warm weather camping, and so is not particularly warm. It is EN rated to 33°F, but we slept out in 40°+ weather and did not feel overly warm. This has to do with the shape and size of the bag. It is very roomy, which allows for a lot of cold air to remain around your body. We did sleep out in the Trestles one very windy night and were surprised at how well the shell material blocked wind. The NEMO Celesta 25 is similarly roomy to the Trestles, but we think the Celesta is slightly warmer because of its thick insulation.
This bag is not intended to be lightweight. This is the heaviest sleeping bag in this review, tied with the Mountain Hardwear Laminina Z Flame due to its bulky synthetic insulation, having a full-length as well as a half-length zipper, and additional features such as a stow pocket. Its shell materials also seem to be quite thick and heavy. The Celesta is the second heaviest bag in this review after the Laminina and Trestles.
The Trestles is one of the most comfortable sleeping bags in this test. It has lots of room to move around, and the zipper on each side allows you to pull the front flap of the sleeping bag down, freeing your arms to do things outside of the bag, like read a book. If you are looking for a lighter, warmer bag to stick your arms out of, check out the Sierra Designs Backcountry Bed 700 - Women's with its unique partial quilt design.
Although this bag is heavy and bulky, it comes with a compression sack that is able to compress the bag down quite small. It should be noted that each time you compress a sleeping bag, it loses a bit of its loft, so it is not recommended to compress your bag when not necessary. Never store your sleeping bag fully compressed.
The Trestles has added insulation in the foot and hood areas where women tend to get the coldest. It also has the unique feature of dual zippers for easy entry, as well as a small interior stow pocket. We like all of these features, but they do contribute to the bag's weight.
The Trestles is great for taking warm weather camping or on a river trip; it would also be a great model to take to the beach. Because this bag is not super warm and is quite heavy, its versatility (in terms of backpacking) is limited. We would not want to carry this bag on an extended backpacking trip, but it would fare well on a car camping trip. It is synthetic, so it will do better than a down bag like the Kelty Cosmic 20 - Women's in wet conditions, such as on a river trip.
$99 is a great value for this bag. Since it is so inexpensive, you don't have to worry about getting it dirty or wet at those crazy beach parties. We think it has higher quality materials than the Slumberjack Boundary and would choose it over the Boundary bag for longer trips.
Though this bag is inexpensive and good quality for the price, we chose the Kelty Cosmic Down - Women's over this one for our Best Buy winner because it is warmer and lighter than the Trestles, even though it costs around $60 more. The Trestles would be our runner-up Best Buy winner for women's sleeping bags, if you're looking for a super duper value on a tight budget.
— Jessica Haist